Answer:
Step-by-step explanation:
∠1 = 38 {Vertically opposite angles}
∠2 = 39 + 36 = 75
Exterior angle equals the sum of opposite interior angles.
x = ∠1 +∠2
= 38 + 75
x = 113
Let the equation representing the function be y = -mx + c; where m is the charge per minute and c is a initial balance.
25.04 = -31m + c . . . . . (1)
19.74 = -64m + c . . . . . (2)
(1) - (2) gives: 5.3 = 33m
m = 5.3/33 = 0.16 (i.e. charge per minute is 16 cents)
From (1), 25.04 = -31(0.16) + c
25.04 = -4.96 + c
c = 25.04 + 4.96 = 30 (i.e. initial balance is $30)
Remaining credit after 85 minutes call is -85(0.16) + 30 = -13.6 + 30 = $16.40
Answer:
3n/8 +1=25
3n/8= 25-1
3n/8=24
Multiply both sides by 8 to clear the fraction on the left
3n=24x8
n=24x8/3
n=64
2115000
x*10= 42300
x= 4230
x*500
4230*500= 2115000
Hope this helps
Does this set of ordered pairs represent a function? Why or why not? {(–1, 5), (0, –3), (2, 7), (4, 0), (7, 5)} A. No, because t
iVinArrow [24]
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Answer:
C. Yes, because every x-value corresponds to exactly one y-value.
Step-by-step explanation:
The list of x-values is {-1, 0, 2, 4, 7}. We note that no two are the same, so this is a functional relation.
The set of ordered pairs is a function because each x-value corresponds to exactly one y-value.